Exercise Chapter 6 - Discovering Computer 2011 - Living in Digital World

Martin - 1601213690

01 PBT

True / False

1.   True
2.   True
3.   False
4.   True
5.   False
6.   False
7.   True
8.   False
9.   False
10. True
11. False
12. False
13. False


Multiple Choice

1. D ( letters, reports, and e-mail messages )
2. B ( OLED )
3. A ( DisplayPort )
4. D ( diagonal )
5. D ( dots per inch (dpi) )
6. B ( if the multifunction peripheral breaks down, all functions are lost )
7. C ( interactive whiteboard )
8. D ( Force feedback )


Matching

1.   d
2.   j
3.   g
4.   h
5.   f
6.   c
7.   a
8.   e
9.   b
10. i


Short Answer

1. * A higher resolution uses a greater number of pixels and thus provides a smoother, sharper, and clearer image. As you increase the resolution, however, some items on the screen appear smaller.
    * With LCD monitors and screens, resolution generally is proportional to the size of the device.

2. * HDTV is working with digital broadcast signals, transmitting digital sound, supporting wide screens, and providing resolutions up to 1920 3 1080 pixels.
    * Users plug one end of a cable in the game console and the other end in the video port on the television.

3. * With Bluetooth printing, a computer or other device transmits output to a printer via radio waves.
    * With Infrared printing, a printer communicates with a computer or other device using infrared light waves.

4. * Ink-jet printer forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper.
    * Professionals require high image quality, such as medical labs, photography studios, and security identification systems. These high-end printers cost thousands of dollars and print images in a wide range of sizes. Most dye-sublimation printers for the home or small business user, by contrast, typically print images in only one or two sizes and are much slower than their professional counterparts.

5. * Surround sound system may contain speakers and sub-woofer.
    * Audio resolution is the number of bytes that represent sound in a given time, stated as a bit rate such as 8-bit, 16-bit, or even 24-bit. The three examples of the audio resolution is AM radio ( 8 bit ), optical disc-quality sound ( 16-bit ) and high quality digital audio editing ( 24 bit ).